TY - JOUR AU - S. A. Obraztsova AU - A. V. Pastor TI - About vertices of degree~$k$ of minimally and contraction critically $k$-connected graphs: upper bounds JO - Zapiski Nauchnykh Seminarov POMI PY - 2011 SP - 198 EP - 210 VL - 391 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_2011_391_a8/ LA - ru ID - ZNSL_2011_391_a8 ER -